Feel free to add any calendar to this list, even a calendar of any of the employees if you have sufficient permissions. Start typing the name, login or e-mail in the search box and then select in the list a person you are looking for. Select the required calendars in the list and click Add.

To remove a calendar from Favorites, use the eponymous menu command:

Managing Calendars

Use the calendar action menu to edit and manage the calendars:

Edit: opens the calendar properties form which is mostly similar to the one used when creating a calendar. For an existing cal3endar, however, there are two extra elements: a Delete calendar link and the access permissions configuration tab: